Current vegetable production systems use polyethylene (plastic) mulch and require multiple applications of agrochemicals. During rain events, runoff from vegetable production is enhanced because 50 to 75% of the field is covered with an impervious surface. This study was conducted to quantify off-site movement of soil and pesticides with runoff from tomato (Lycopersicon esculentum Mill.) plots ...

Two experiments were conducted in north-central Florida to examine the effects of various winter cover crops on plant-parasitic nematode populations through time. In the first experiment, six winter cover crops were rotated with summer corn (Zea mays), arranged in a randomized complete block design. The cover crops evaluated were wheat (Triticum aestivum), rye (Secale cereale), oat (Avena sativ...

Vicia includes several economically useful food and forage legume crops. Among these, are Vicia sativa (common vetch) and Vicia narbonensis (Narbon vetch). The present study was carried out to evaluate seventeen lines of V. sativa and six lines of V. narbonensis for adaptability and yield under Riyadh conditions. Parameters studied included days to flowering, days to maturity, plant height, see...

Viral insect-borne plant pathogens have devastating impacts in agroecosystems. Vector-borne are often transmitted by generalist insects that move between non-crop and crop hosts. Insect vectors can wide diet breadths, but it is unknown which hosts serve as pathogen reservoirs host harbours the highest density of vectors. In Pacific Northwest USA, pea aphid (Acyrthosiphon pisum) a key virus vect...

This study investigated the effects of crop rotations and different ratios dairy manure fertilizer on nitrogen loss rice yield in Erhai Lake basin. Two kinds herbages were set rotation: Ryegrass (Lolium multiflorum cv.‘Tetragold’) (R) Villose Vetch (Vicia villosa var. Glabresens) (V). The experiment involved two-year field tests with nine management treatments. results showed that rice-Vicia ro...